(19)

(11)

EP 1 660 311 A1

(12)

(43) Date of publication: 31.05.2006 Bulletin 2006/22 (21) Application number: 04768184.6 (22) Date of filing: 25.08.2004

(51) International Patent Classification (IPC):  B29D 23/00(1968.09) C08J 7/12(1974.07) F16L 47/03(2000.01) (86) International application number: PCT/GB2004/003628 (87) International publication number: WO 2005/021252 (10.03.2005 Gazette 2005/10)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 29.08.2003 GB 0320289 (71) Applicant: Glynwed Pipe Systems Ltd Kent, TN13 1SD (GB)	(72) Inventors: ROBERTS-MOORE, Paul, Clive Staffordshire, WS11 9XT (GB) BULL, Michael, Durapipe UK Staffordshire, WS11 9NS (GB) HILL, David, John Cambridgeshire PE19 5UA (GB) WILSON, Keith, Andrew Rushden Northants NN10 9LW (GB) (74) Representative: Townsend, Victoria Jayne et al Fry Heath & Spence LLP, The Gables, Massetts Road Horley, Surrey RH6 7DQ Horley, Surrey RH6 7DQ (GB)